JPH0768871A - Recording device - Google Patents

Abstract

PURPOSE:To record a high-quality image without being caught by a recording head even with respect to levitation of sheets in their cockling in the high-duty recording of a color printer and the like. CONSTITUTION:An automatic recording device has a pressure platen, on which recording sheets can be stacked, and a sheet feed roller 12 adapted to feed the recording sheets P from the pressure platen. When the recording sheets P stacked on the pressure platen are fed by the sheet feed roller 12, the recording sheets are separated one sheet by one sheet and fed to a recording unit. In this recording device, a plurality of spur rows 53A, 53B are provided on a spur holder on the upstream and downstream sides in a direction in which the sheets are fed, respectively, and recorded sheets are transferred to a delivery unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus provided with an automatic paper feeder for automatically feeding recording sheets one by one.

[0002]

2. Description of the Related Art In a recording device such as a printer, a copying machine or a facsimile, an energy generating body of a recording head is driven according to recording information to form an image on a recording sheet (recording body) such as paper or a plastic thin plate. Is configured to record.

The recording apparatus can be classified into an ink jet type, a wire dot type, a thermal type, a laser beam type and the like depending on the recording method.

The recording sheets used in the recording apparatus include plain paper, thick paper such as postcards and envelopes, and special sheets such as plastic thin plates.

FIG. 11 shows a schematic sectional view of an example of a conventional recording apparatus. As shown in FIG. 11, in the above-described recording apparatus, generally, the recording sheet 101 is stored in the automatic paper feeding unit 10.
By rotating the second paper feed roller 103, the sheets are separated and fed one by one. The recording sheets 101 that are separately fed are
It is fed between the transport roller 104 and the plurality of pinch rollers 105, and is fed onto the platen 106 of the recording unit by the rotation of the transport roller 104. Recording head 1 of recording unit
The recording sheet 101 recorded by 07 is sent to the paper discharge roller 108 behind the conveying roller 104. A spur 110 attached to the exterior cover 109 is pressed against the paper discharge roller 108, and the transport roller 10
The driving force is transmitted from the recording sheet 101 to the recording sheet 101 by the rotation of the sheet discharge roller 108.
Are stacked in the paper output section.

[0006]

However, in the conventional recording apparatus, since the recording sheet is held only by the plurality of spurs attached to the outer cover, there is no problem in low-duty recording, especially in a color printer or the like. In high-duty printing, there was a problem that the paper surface extends at the ink adhesion part and becomes wavy, so that the edge of the paper is caught by the recording head due to so-called cockling, causing image stains and damage to the recording head. .

The present invention has been made in view of the above technical problems, and records a high image without catching the recording head against the floating in the cockling of the paper in the high duty recording of a color printer or the like. It is an object of the present invention to provide a recording device capable of performing.

[0008]

A first recording apparatus of the present invention which achieves the above object, is a stacking unit capable of stacking recording sheets, and a rotary feeder provided for sending out the recording sheets from the stacking unit. And an automatic paper feeding device for separating the recording sheets stacked one by one on the stacking means and feeding the recording sheets to the recording unit at the time of feeding by the rotary feeding body, and ejecting the recorded recording sheets. Spur to convey to the paper part,
In a recording apparatus having a spur-attached member, a plurality of rows of recording sheet pressing members are provided in the paper feeding direction.

The second recording apparatus of the present invention is the same as the first recording apparatus, wherein the plurality of rows of recording sheet pressing members have a plurality of spurs on the upstream side and a plurality of spurs on the downstream side.
It is characterized in that it is a spur attachment member to which a roller or the spur on the upstream side is attached.

A third recording apparatus of the present invention is characterized in that, in the first or second recording apparatus, the spur attachment member is removable.

A fourth recording apparatus of the present invention is characterized in that, in the first, second or third recording apparatus, the spur attachment member has a pressing rib for a recording sheet.

A fifth recording apparatus according to the present invention is the recording apparatus according to the fourth recording apparatus, characterized in that the pressing ribs outside the recording region are protruded from other pressing ribs.

A sixth recording apparatus of the present invention is the recording apparatus according to any one of the first to fifth recording apparatuses, wherein the stacking means capable of stacking recording sheets is projected so as to correct the parallelism of the recording sheets with respect to the recording means. It is characterized by having ribs.

A seventh recording apparatus of the present invention is the recording apparatus according to the sixth recording apparatus, wherein the protruding rib is provided on a recording sheet pressing member of the stacking means.

An eighth recording apparatus according to the present invention is characterized in that, in any one of the first to seventh recording apparatuses, a positive play is provided in the rotational direction of the rotary feeding member.

A ninth recording apparatus of the present invention is the recording apparatus according to any one of the first to eighth recording apparatuses, wherein
It is characterized in that a rotatable roller is provided so as to regulate the position of the recording sheet in the stacking means.

Furthermore, a tenth recording apparatus of the present invention is the recording apparatus according to any one of the first to ninth recording apparatuses, wherein the rotary feeding member is provided with a member protruding to the paper path surface only when the recording sheet is fed. It is characterized by being provided.

[0018]

According to the present invention, a spur train for discharging paper is provided on the upstream side of the member for spur attachment and a spur train for paper pressing is provided on the downstream side of the member for spur attachment. A paper holding rib is also provided, and by protruding the paper holding rib especially outside the recording area, it is possible to suppress the floating of the paper even in high-duty printing, prevent image stains, protect the recording head, and improve high image quality. A recording device is provided.

Further, by making the member for attaching the spur attachable and detachable, the platen cleaning can be easily carried out and the serviceability is improved.

[0020]

Embodiments of the present invention will now be described in detail with reference to the drawings.

(Embodiment 1) FIGS. 1 to 8 show a first embodiment of the present invention. The present embodiment is a recording device integrated with an automatic paper feeding device, and comprises a paper feeding portion, a paper feeding portion, a paper discharging portion, a carriage portion, and a cleaning portion.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a recording apparatus suitable for carrying out the present invention, FIG. 2 is a front view thereof, and FIGS. 3 to 7 are side views thereof.
FIG. 8 is a sectional view thereof.

The paper feed unit 11 is attached to the main body side at an angle of 30 ° to 60 °, and the set recording sheet P is horizontally discharged after recording. The paper feeding unit 11 includes a paper feeding roller 12 for picking up the recording sheet P, a separation claw 13 for separating the recording sheets P picked up by the paper feeding roller 12 one by one, and a side end of the recording sheet P in the paper feeding unit 11. A movable side guide 14 that regulates the position, a base 15 to which parts such as the paper feed roller 12 are attached, a pressure plate 16 on which the recording sheets P are stacked, and a pressure plate spring 17 that can urge the pressure plate 16 toward the paper feed roller 12. ，
Each drive gear 18 to 23 for transmitting the drive to the paper feeding unit 11, a release cam 24 for regulating the position of the pressure plate 16, a separation claw 13
Claw spring 25 for urging the pressure plate 16 toward the pressure plate 16;
Release lever 26 and release lever 2 for moving the position of
6 includes a release cam 27 that rotates with the movement of 6 to regulate the position of the pressure plate 16. Note that normally, as shown in FIG. 5, the pressure plate 16 is pushed down by the release cam 24, so that the recording sheet P is separated from the paper feed roller 12.

With the recording sheet P set, the drive gears 18 to 23 transmit the drive of the conveying roller 31 of the paper feeding unit 30 to the paper feeding roller 12 and the release cam 24. When the release cam 24 separates from the pressure plate 16, the pressure plate 16
6 as shown in FIG. 6, the paper feed roller 12 contacts the recording sheet P, the recording sheet P is picked up as the paper feed roller 12 rotates, and separated by the separating claw 13. The separated recording sheet P is sent to the paper feeding unit 30. The paper feed roller 12 and the release cam 24 are the recording sheet P.
Is rotated once until the sheet is fed to the sheet feeding section 30, and the driving from the conveying roller 31 is cut off with the pressure plate 16 released to the sheet feeding roller 12 again, and this initial state is maintained.

The paper feeding section 30 includes a conveying roller 31 for conveying the recording sheet P to be recorded, a pinch roller 32 and a pinch roller 32 which form a pair of rollers which face the conveying roller 31 and convey the recording sheet P. A pinch roller guide 33 that supports the pinch roller guide 33, a pinch roller spring 34 that is attached to the pinch roller guide 33 and urges the pinch roller 32 to the transport roller 31, and a recording sheet that is provided in front of the roller pair and that is sent from the paper feed unit 11. The PE sensor lever 35 that abuts P and the movement of the PE sensor lever 35 causes the sheet feeding unit 11
A PE sensor 36 for detecting the leading edge of the recording sheet P sent from the PE sheet, a PE sensor spring 37 for urging the PE sensor lever 35 so that the leading edge of the PE sensor lever 35 is located in front of the roller pair,
A paper guide 38 for guiding the recording sheet P sent to the roller pair, and a platen 3 for supporting the recording sheet P to be recorded.
It consists of 9 mag.

The recording sheet P sent to the paper sending section 30 is sent between a pair of rollers formed by the carrying roller 31 and the pinch roller 32, using the platen 39, the pinch roller guide 33 and the paper guide 38 as guides. To be The recording sheet P contacts a PE sensor lever 35 provided in front of the roller pair. As a result, the PE sensor 36 detects that the leading edge of the recording sheet P has arrived in front of the roller pair, and the recording position on the recording sheet P is obtained.
The pinch roller guide 33 is urged by a pinch roller spring 34 to push the pinch roller 32.
The recording sheet P is pressed against the recording sheet P, thereby generating a conveying force for the recording sheet P. The roller pair formed by the pinch roller 32 and the transport roller 31 is rotated by an LF motor (not shown), and the recording sheet P transported by this roller pair advances along the surface of the platen 39, and the recording head 40 drives it. It is recorded based on predetermined image information. The recording head 40 is provided with an electric exchanger, and ink is ejected from an ejection port to perform recording by utilizing a pressure change caused by growth and contraction of bubbles due to a boiling film via applied thermal energy.

The carriage unit 41 holds a carriage 42 to which the recording head 40 is attached, a guide shaft 43 for reciprocally scanning the carriage 42 in a direction perpendicular to the conveying direction of the recording sheet P, a rear end of the carriage 42, and a head. ~ A guide 44 for maintaining the space between sheets, a timing belt (not shown) for transmitting the drive of the carriage motor to the carriage 42, an idle pulley (not shown) for stretching the timing belt, and a head drive signal from the electric substrate to the recording head 40 (Not shown), such as a carriage substrate. An image is formed on the recording sheet P conveyed on the platen 39 by the scanning of the recording head 40 integrally with the carriage 42.

In the paper discharge section 50, a paper discharge roller 51, a transmission roller 52 for transmitting the driving of the transport roller 31 to the paper discharge roller 51, spurs 53A and 53B for assisting the discharge,
A paper discharge tray 54 is provided. The recorded recording sheet P is discharged onto the discharge tray 54 by the discharging roller 51 and the spurs 53A and 53B without staining the image on the recording sheet P.

The spurs 53A and 53B are mounted on a spur holder 55 which can be attached to and detached from the platen 39, and an elastic member 56 such as a torsion coil spring is used as an axis, and the spur 53 is provided on the upstream side and the downstream side in the paper feeding direction.
A plurality of rows, such as four on the upstream side and three on the downstream side, are attached at intervals of about 20 mm to 100 mm across the row.
The spur 53A on the upstream side is pressed against the paper discharge roller 51 and gives a conveying force for paper discharge. Downstream spur 53B
Are located in the middle of the interval between the upstream side spurs 53A, and suppress the floating of the recording sheet P. Further, there is a protruding paper pressing rib 57 outside the printing area of the LTR on the side of the spur holder 55 with respect to the recording sheet P.
The float of the recording sheet P such as a sheet or an envelope that cannot be pressed by 3A and 53B is suppressed. Both sides of the spur rotating surface are covered with protection ribs 58 from the spur holder 55, which protects the spur rotating surface from being directly touched by a finger or the like. Since the spur holder 55 is removable, the spur holder 55 can be easily removed when cleaning the platen. The spur holder 55 is snap-fastened to the platen 39 by an integral mold claw 55a.

Although not shown, the recording head 40
A cleaning unit is provided for cleaning the.
The cleaning unit is composed of a pump for cleaning the recording head 40, a protective cap for suppressing the drying of the recording head 40, a suction cap for removing the ink adhered to the recording head 40, and a blade. An LF motor (not shown) that drives the conveyance roller 31, etc., a carriage motor (not shown) that drives the carriage 42, and a purge motor (not shown) that drives the cleaning unit are stepping devices that rotate by a predetermined angle in response to a signal sent from a driver (not shown). It uses a motor.

The paper feed roller 12 includes a paper feed rubber roller 61.
Is attached to the paper feed roller rubber 6
A part of the sensor plate 62 having a radius smaller than the diameter of 1 is provided in a fan shape. Only when the paper feed roller 12 and the release cam 24 are in the initial position for releasing the pressure plate as shown in FIG. 5, the light from the roller sensor 63 including a photo interrupter directly provided on the sensor substrate attached to the paper guide 38 is provided. Is configured to block light. By detecting the state of the sensor plate 62, it is possible to detect the angular position of the paper feed roller 12 and the angular position of the release cam 24 that is in phase with and interlocked with the paper feed roller 12, and the feeding of the recording sheet P is performed. The timing of control in the paper sequence can be timed.

Next, details of each main part of the paper feeding unit 11 will be described.

The paper feeding unit 11 is a unit in which the components of the paper feeding unit are attached to the base 15.

The paper feed unit 11 of this embodiment is based on one side of the recording sheet P, and the inside of the right side plate of the base 15 is the reference. The base 15 has a pressure plate 16 shown in FIG.
As shown in FIG. 3, a recess for forming a pressure plate spring 17 is formed at a position that can be retracted in a direction away from the paper feed roller 12 and that is substantially opposed to the roller portion of the paper feed roller 12.
The pressure plate 16 is connected to the base 15 by pressure plate shafts 16a at the upper ends of both ends, and is rotatable around the pressure plate shaft 16a. A separating pad 64 made of an artificial leather or the like having a relatively large friction coefficient is provided at a position of the pressure plate 16 facing the paper feeding roller rubber 61 of the paper feeding roller 12 so as to perform double feeding when the number of sheets becomes small. Etc. are prevented. A movable side guide 14 that can slide left and right on the pressure plate 16 is attached so that recording sheets of different sizes can be set on the paper reference surface.

The recording sheet P set on the flat portion of the pressure plate 16 floats on one side by the plate thickness of the movable side guide 14, but for this reason, at a position about 18 mm from the paper reference surface of the pressure plate 16. , Height extending in paper feed direction about 1mm
Ribs 65 are provided. By the ribs 65, the other side of the recording sheet P is floated, and in particular, the balance of the set of postcards and the like is maintained and skewing or the like is prevented.

A paper guide 66, which is an elastic sheet member, is provided upstream of the paper feed roller rubber 61 of the paper feed roller 12 in the paper setting.
Extends from the exterior. Thus, when the recording sheet P is set, it is possible to prevent the recording sheet P from rotating with the sheet feeding roller rubber 61 when the recording sheet P touches the sheet feeding roller rubber 61.

Both ends of the paper feed roller 12 are held by the base 15 and are rotatable. The paper feed roller 12 is an integrally molded product made of plastic or the like and includes a shaft portion 12a and a roller portion 12b, and the recording sheet P is provided around the roller portion 12b.
A paper feed roller rubber 61 for carrying the sheet is provided. The roller portion 12b is formed in a D shape (or a half moon shape), and has a radius of 0.5 to 3 mm smaller than the radius of the feed roller rubber 61 attached to the feed roller 12 on each outer side of the roller portion 12b. 67 is provided to prevent the recording sheet P from touching the sheet feeding roller rubber 61 of the sheet feeding roller 12 except when the sheet is being fed, thereby preventing the image from being stained or the sheet feeding roller 12 from being displaced.

Further, two roller portions 12b of the paper feed roller 12 are provided and fixed at positions of about 40 mm and about 150 mm from the paper reference plane, respectively. Therefore, the A4 size or the like is conveyed by the two rollers, and the postcard or the like is conveyed by the one roller on the paper reference side.

Further, the paper reference of the paper feed roller 12 is about 19
A roller roller 68 is also provided at a position of 0 mm, which prevents the recording sheet P from protruding to the left side, thereby preventing skewing of the recording sheet P.

Further, the paper reference of the paper feed roller 12 is about 1
A rib 69 having a radius smaller by 0.5 to 3 mm than the radius of the sheet feeding roller rubber 61 attached to the sheet feeding roller 12 is provided at a position of 10 mm. This prevents postcards from floating when they are fed, and prevents their skewing and curling.
The ribs 69 are fan-shaped so as to project toward the recording sheet only when the paper is fed.

As shown in FIGS. 3, 4, and 9, a paper feed roller gear 21 is connected to one side of the paper feed roller 12 by a dovetail groove 71. The play between the dovetail groove 71 and the paper feed roller gear 21 is 0.4 to 0.6 mm. By positively providing the play, the planet gear, which will be described later, can be better engaged, and recording on the paper feed roller 12 after registration is completed. The back tension for the sheet P is reduced and the transportability is improved. If the backlash is too small, the back tension of the paper feed roller 12 becomes large, which causes skewing and misalignment. On the other hand, if the backlash is too large, the cash register will not be effective.

When the blade arm of the cleaning unit is released to allow the drive switching arm (not shown) to rotate freely and the transport roller 31 to rotate normally, the planet gear (not shown) moves and meshes with the input gear 18 to feed the paper. Drive is transmitted to the section. The input gear 18 is an idler gear 19, 2
Drive is transmitted to the paper feed roller gear 21 that is connected to the paper feed roller 12 via 0. As a result, the paper feed roller 12 is rotated and the recording sheet P is conveyed. Further, the paper feed roller gear 21 transmits drive to the release cam 24 via the clutch gear 22 and the idler gear 23. At this time,
The paper feed roller 12 and the release cam 24 are configured to be in phase for each rotation, and the paper feed roller 12 is shown in FIG. 5 when the pressure plate 16 shown in FIGS. 4 and 5 is released. As described above, the half-moon portion (flat portion) of the roller portion 12 b is configured to face the pressure plate 16. The release cam 24 is shaped so as to release the pressure plate 16 only during an angle of about 120 degrees, which is a rotation range in which the half-moon portion of the roller portion 12b of the paper feed roller 12 faces the pressure plate 16. When a portion other than the half-moon portion of the roller portion 12b of the sheet is opposed to the pressure plate 16, the sheet feeding roller 12
However, the recording sheet P or pressure plate 16 and 200 g to 5
It is configured to contact with each other at a pressure of 00 g. further,
The release cam 24 releases the pressure plate 16 by pushing down the push-down portion 16b of the pressure plate 16 protruding from the hole formed in the right side plate of the base 15. At this time, the pressure plate cam 72 whose both ends are attached to the base 15 is pushed down by the cam 16c on the side close to the push-down portion 16b of the pressure plate 16, and the pressure plate cam 72 rotates about the center 72a. Pressure plate cam 7
2 is extended in the left-right direction of the pressure plate 16, and the end opposite to the end contacting the cam 16c has the paper feed roller 12 of the pressure plate 16.
In the figure, it engages with a cam 16d provided on the outside of the portion facing the roller portion 12b on the left side. Therefore, the rotation of the pressure plate cam 72 pulls down the cam 16d. As described above, even if the push-down portion 16b at the end of the pressure plate 16 is lowered, the pressure plate 16 does not tilt with respect to the base 15 and is released substantially in parallel. A clutch spring (not shown) is provided in the center of the clutch gear 22, and the spring is configured to be tightened in the direction of arrow A in FIG. 3 so as not to reverse. This allows the paper feed roller 1 to be used when registration is performed.
Since 2 does not rotate due to the elasticity of the recording sheet P, good registration can be performed.

The separating claw 13 is rotatable about the center 13a, and the claw spring 25 allows the recording sheet P or the pressure plate 16 to rotate.
Is urged by 20 to 100 g. Separation claw 1
Reference numeral 3 is for separating the so-called plain paper recording sheet P when it is fed. As shown in FIG. 2, it is provided only on the paper reference side, and the corners of the recording sheet P are covered with triangles. It has a unique shape. The recording sheets P can be separated one by one by receiving the resistance in the triangular portion. Further, when separating thick paper or the like other than plain paper, the lower guide portion 15a of the base 15 is not put on the recording sheet P by the separation claw 13.
By abutting against each other, the resistance of the lower guide portion 15a can be used to separate the sheets one by one.

(Second Embodiment) A second embodiment will be described. This is a case where the rotatable spur train substitutes for the spur train on the downstream side of the spur attachment member. The spur train on the upstream side is preferably a metal spur because it directly presses the recording sheet, but on the downstream side, it is enough to suppress the floating of the recording sheet and the fixing of the image is sufficient. Absent. Since the rollers are integrally molded, and the shaft of the elastic body is not required, the cost can be reduced.

(Third Embodiment) FIG. 10 illustrates a third embodiment. Further, if the recording apparatus does not require a particularly high duty, it is possible to eliminate the roller of the second embodiment and directly project the paper pressing rib 81 from the spur attachment member 55. In this case, as the paper retainer, only the member for spur attachment is used, but the cost is further reduced.

Although the present invention has been described above with reference to Examples 1 to 3, the present invention is not limited to this. The recording used in the present invention also includes printing on cloth or thread. (Others) The present invention is provided with a means (for example, an electrothermal converter or a laser beam) for generating heat energy as energy used for ejecting ink, particularly in the inkjet recording system, and The effect is excellent in a recording head and a recording apparatus of a system that causes a change in ink state by energy. This is because such a system can achieve high density recording and high definition recording.

Regarding its typical structure and principle, see, for example, US Pat. Nos. 4,723,129 and 4740.
What is done using the basic principles disclosed in 796 is preferred. This method is a so-called on-demand type,
It can be applied to any of the continuous type, but especially in the case of the on-demand type, it can be applied to the sheet holding the liquid (ink) or the electrothermal converter arranged corresponding to the liquid path. By applying at least one drive signal corresponding to the recording information and giving a rapid temperature rise exceeding nucleate boiling, heat energy is generated in the electrothermal converter, and film boiling is caused on the heat acting surface of the recording head. Liquid (ink) corresponding to this drive signal in a one-to-one correspondence
It is effective because bubbles can be formed inside. Due to the growth and contraction of the bubbles, the liquid (ink) is ejected through the ejection opening to form at least one droplet. It is more preferable to make this drive signal into a pulse shape, because the bubble growth and contraction are immediately and appropriately performed, so that the ejection of the liquid (ink) with excellent responsiveness can be achieved. As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise on the heat acting surface are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the discharge port, the liquid passage, and the electrothermal converter (the straight liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned respective specifications. US Pat. No. 4,558,333, US Pat. No. 4,558,333, which discloses a configuration in which a heat acting portion is arranged in a bending region.
The structure using the specification of No. 59600 is also included in the present invention. In addition, Japanese Unexamined Patent Publication No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy is provided. The effect of the present invention is effective even if the configuration corresponding to the ejection portion is disclosed in JP-A-59-138461. That is, according to the present invention, recording can be surely and efficiently performed regardless of the form of the recording head.

Further, the present invention can be effectively applied to a full line type recording head having a length corresponding to the maximum width of a recording medium which can be recorded by the recording apparatus. Such a recording head may have a configuration that satisfies the length by a combination of a plurality of recording heads or a configuration as one recording head integrally formed.

In addition, even in the case of the serial type as in the above example, the recording head fixed to the main body of the apparatus or the ink jet from the main body of the apparatus is electrically connected to the main body of the apparatus by being attached to the main body. The present invention is also effective when a replaceable chip-type recording head that can be supplied or a cartridge-type recording head in which an ink tank is integrally provided in the recording head itself is used.

Further, as the constitution of the recording apparatus of the present invention, it is preferable to add ejection recovery means of the recording head, preliminary auxiliary means and the like because the effects of the present invention can be further stabilized. Specifically, heating is performed by using a capping unit, a cleaning unit, a pressure or suction unit for the recording head, an electrothermal converter or a heating element other than this, or a combination thereof. Examples thereof include a preliminary heating unit for performing the discharge and a preliminary discharge unit for performing discharge different from the recording.

Regarding the type and number of recording heads to be mounted, for example, only one is provided corresponding to a single color ink, or a plurality of inks having different recording colors and densities are supported. A plurality of pieces may be provided. That is, for example, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, but it may be either the recording head is integrally formed or a plurality of combinations may be used. The present invention is also extremely effective for an apparatus provided with at least one of full-color recording modes by color mixing.

In addition, in the above-described embodiments of the present invention, the ink is described as a liquid, but an ink that solidifies at room temperature or below and that softens or liquefies at room temperature may be used. Or, in the inkjet system, it is common to control the temperature of the ink itself within the range of 30 ° C. or higher and 70 ° C. or lower to control the temperature so that the viscosity of the ink is within the stable ejection range. Sometimes, a liquid ink may be used. In addition, the temperature rise due to thermal energy is positively prevented by using it as the energy of the state change of the ink from the solid state to the liquid state, or in order to prevent the evaporation of the ink, it is solidified and heated in the standing state. You may use the ink liquefied by. In any case, by applying thermal energy such as ink that is liquefied by applying thermal energy according to the recording signal and liquid ink is ejected, or that begins to solidify when it reaches the recording medium. The present invention can be applied to the case where an ink having a property of being liquefied for the first time is used. In this case, the ink is
JP-A-54-56847 or JP-A-60-7
As described in Japanese Patent No. 1260, it may be configured to face the electrothermal converter in a state of being held as a liquid or a solid in the concave portion or the through hole of the porous sheet. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

In addition, as the form of the ink jet recording apparatus of the present invention, besides the one used as an image output terminal of an information processing apparatus such as a computer, a copying apparatus combined with a reader or the like, and a facsimile apparatus having a transmission / reception function are provided. It may be a form or the like.

[0055]

As is apparent from the above description, according to the present invention, a spur train for discharging paper is provided on the upstream side in the paper feeding direction and a spur for holding paper is provided downstream of the spur mounting member. Rows are provided, and paper holding ribs are also provided on the spur mounting member. Especially, by protruding the paper holding ribs outside the printing area, it is possible to prevent the paper from floating even in high-duty printing and prevent image contamination. , Protect the recording head,
A high-image recording device can be provided.

Further, by making the spur attachment member detachable, the platen cleaning can be carried out easily and the serviceability is improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a recording apparatus according to a first embodiment of the invention.

FIG. 2 is a schematic front view of the recording apparatus according to the first embodiment of the invention.

FIG. 3 is a side view of the automatic paper feeder according to the first embodiment of the present invention.

FIG. 4 is a side view of the automatic paper feeder according to the first embodiment of the present invention.

FIG. 5 is a side view of the automatic paper feeder according to the first embodiment of the present invention.

FIG. 6 is a side view of the automatic paper feeder according to the first embodiment of the present invention.

FIG. 7 is a schematic sectional view of a recording apparatus according to a first embodiment of the invention.

FIG. 8 is a schematic sectional view of a recording apparatus according to a first embodiment of the invention.

FIG. 9 is a partial cross-sectional view of the rotary feeding body according to the first embodiment of the present invention.

FIG. 10 is a schematic sectional view of a recording apparatus according to a third embodiment of the invention.

FIG. 11 is a schematic sectional view of a recording apparatus according to a conventional example of the present invention.

[Explanation of symbols]

 11 Paper Feeding Section 12 Paper Feeding Roller 13 Separation Claw 16 Pressure Plate 17 Pressure Plate Spring 18 Input Gear 19, 20, 23 Idler Gear 21 Paper Feeding Roller Gear 22 Clutch Gear 24 Release Cam 30 Paper Feeding Section 31 Conveying Roller 32 Pinch Roller 33 Pinch Roller Guide 34 Pinch roller spring 35 PE sensor lever 36 PE sensor 37 PE sensor spring 38 Paper guide 39 Platen 40 Recording head 41 Carriage part 42 Carriage 50 Paper ejection part 51 Paper ejection roller 52 Transmission roller 53A, 53B Spurs 54 Discharge tray 55 Spurs holder 55a Mold Claw 56 Elastic material 57 Paper pressing rib 58 Protective rib 61 Paper feed roller rubber 62 Sensor plate 63 Roller sensor 64 Separation pad 65 Rib 66 Paper guide 67 Roller roller 71 Dovetail groove 72 Pressure plate cam 81 Paper Holding rib

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Toshiyuki Onishi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Makoto Takemura 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (72) Inventor Satoshi Satagawa 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Hiroshi Yoshino 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Shinji Kanemitsu 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (12)

[Claims] 1. A recording sheet loaded on the stacking means is provided by a rotary feeding body, which comprises a stacking means capable of stacking the recording sheet and a rotary feeding body provided for feeding the recording sheet from the stacking means. In a recording apparatus having an automatic paper feeding device that separates recording sheets one by one at the time of feeding and feeds the recording sheets to a recording unit, a spur that conveys the recorded recording sheets to a paper ejection unit, and a member for mounting a spur, A recording apparatus comprising a plurality of rows of recording sheet pressing members arranged in the paper feeding direction. 2. The recording apparatus according to claim 1, wherein the plurality of rows of recording sheet pressing members have a plurality of spurs on the upstream side and a plurality of spurs on the downstream side, rollers, or spurs to which the upstream spurs are attached. A recording device, which is a mounting member. 3. The recording apparatus according to claim 1, wherein the spur attachment member is removable. 4. The recording apparatus according to claim 1, 2, or 3, wherein the member for attaching the spur has a pressing rib for a recording sheet. 5. The recording apparatus according to claim 4, wherein the pressing rib outside the recording area of the pressing rib protrudes from other pressing ribs. 6. The recording apparatus according to claim 1, further comprising: a stacking unit capable of stacking recording sheets,
A recording apparatus, wherein a protruding rib is provided so as to correct the parallelism of the recording sheet with respect to the recording means. 7. The recording apparatus according to claim 6, wherein the protruding rib is provided on a recording sheet pressing member of the stacking unit. 8. The recording apparatus according to claim 1, wherein a play is provided positively with respect to a rotation direction of the rotary feeding body. 9. The recording apparatus according to claim 1, wherein the rotary feeding unit is provided with a rotatable roller so as to regulate the position of the recording sheet in the stacking unit. A recording device characterized by the above. 10. The recording apparatus according to claim 1, wherein the rotary feeding member is provided with a member protruding to a paper path surface only when a recording sheet is fed. apparatus. 11. The recording apparatus according to claim 1, wherein the recording unit has an inkjet recording head that is attachable to and detachable from a recording apparatus main body. 12. The recording apparatus according to claim 11,
The recording apparatus includes an electrothermal converter that generates thermal energy that causes film boiling of the ink, as an element that generates energy used for ejecting ink.